EP0630474B1 - Gehäuse fur gassensoren - Google Patents
Gehäuse fur gassensoren Download PDFInfo
- Publication number
- EP0630474B1 EP0630474B1 EP93905251A EP93905251A EP0630474B1 EP 0630474 B1 EP0630474 B1 EP 0630474B1 EP 93905251 A EP93905251 A EP 93905251A EP 93905251 A EP93905251 A EP 93905251A EP 0630474 B1 EP0630474 B1 EP 0630474B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing according
- housing
- small plate
- region
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/403—Cells and electrode assemblies
- G01N27/406—Cells and probes with solid electrolytes
- G01N27/4062—Electrical connectors associated therewith
Definitions
- the invention relates to a housing for gas sensors according to the Preamble of the main claim.
- Such a housing is known (DE-34 10 122 A1).
- a disadvantage of this known housing are many Individual parts that result in a complex and therefore expensive assembly to have.
- the housing has a two-part ceramic molding on; however, this is divided in a plane that is perpendicular to the axis of the entire housing. This results in a Assembly in the axial direction. This will open the contact terminals the plate is pushed on, creating a notch effect and danger damage to the actual sensor element Result in platelets.
- Many separate holding parts for the storage of the Platelets and separate electrical connections contribute to the complex Assembly at.
- the invention is therefore based on the object of a generic Housing for gas sensors according to the preamble of the main claim easier and easier to assemble.
- the ceramic molding is preferably made of similar there is only two sections, the manufacturing effort easier.
- the plate is then between the ceramic molded parts inserted as well as those inserted in the open slots Contact elements.
- these are placed radially on top of one another and fully assembled in this condition. Relative movements, such as are the sliding of the contact elements on the plate not present in the invention, so that the risk of Damage during assembly is largely eliminated. All in all the result is a housing that is simple and easy to install with little committee at the same time.
- the actual measuring point namely the front one Part of the plate from the rear part of the housing gas-tight separated from each other.
- This can preferably be done by two outside System conical sealing surfaces can be achieved. Sealing lips and / or sealing rings can also be provided be when the cone is pressed against the conical inner surface ensure sufficient gas tightness of the screw-in bushing.
- the tightness between the cone and the plate can by gluing, glazing or with powder filling (ceramic powder) with the cone, preferably in funnel-shaped depressions in the area of the outlet of the plate to be picked up.
- the housing designated 5 in FIG. 1 for a gas sensor has an outer protective housing 6, at one end electrical connections 7 for the mounted on a plate 8 actual sensor element. At the other end is the tile 8 with the sensor element (not shown) under one to be measured Perforated protective hood 9 to be exposed to gas flow. Furthermore, in the protective housing 6 there is a total of 10 Ceramic molded part for the electrical connections and / or the plate intended.
- the ceramic molding 10 consists of - when reproduced Embodiment two identical sections 11 (Fig. 2), which in Fig. 2 in plan view of the parting plane (corresponds to the Drawing level) is shown.
- the section 11 has at one End on one side of open slots 12, in this over this open side projecting from three sides of the slot Contact elements 13 (FIG. 3) held immovably are used.
- the sections 11 have one up to their other end 14 (opposite the one end 15) reaching, as well as the shape of the plate 8 adapted recesses 16 for receiving and storage of the plate 8.
- both the plate 8 clamping the ceramic molding 10 between two recesses 16 of the two forming sections 11 and the sensor element located thereon is also connected in an electrically conductive manner.
- the electrical connections 7, preferably by a crimp connection are connected to the contact elements 13, is also the electrical Connection made in the simplest way.
- the contact elements are designed so that they on both Sides of the plate 8 abut, including a variety of adjacent contact elements and thus electrical Connections 7 allowed. At the same time, the uniform mechanical Loading of the plate due to the contact elements on both sides ensured.
- the two identical sections 11 of the ceramic molding 10 are here of a protective housing designed as a sleeve made of metal 6 held firmly in place.
- each of the two points Parts 11 on a parting surface (drawing plane according to FIG. 2), the both in the assembled state between them the plate 8 and the Record contact elements 13, being in the region of the recess 16 an adhesive receptacle 17 outside the area of the slots is provided in the form of a depression.
- each section shows 11 guide lugs 18, which in a matched guide hole of the other section - and vice versa - intervene.
- a retaining ring for holding below the outer protective housing 6 of the two sections 11 of the ceramic molded part 10 may be provided, which is designed as a spring ring, slotted or shrunk sleeve is.
- the housing 5 has a thread 20 Screw-in bushing 21, over which the protective hood, designated 9 in total protrudes, the outer protective housing 6 on the screw bush 21 is fixed, preferably welded in the area 22.
- the protective housing 6 is preferably connected via a spring assembly 23 a grommet 24 in which the electrical connections 7 to the Contact elements 13 are provided by means of a plug connection 25.
- the protective cover 6 can include the spout 24, or else a separate protective housing 60 may be provided for this area, which in the area 26 with the actual protective housing 6 Folding, welding or gluing.
- the contact element 13 has a rear, over the open fourth side of the slots 12 projecting, actual projection 27, which is resiliently punched out by an approximately arcuate Area 28 is formed.
- the resilience can also be realized in that the contact element 13 is slotted.
- the contact element 13 for immovable holding in the slot 12 a punched out 29, into which a projection 30 in the slot 12 of each section 11 of the ceramic molded part 10 engages.
- this embodiment for a housing can still be varied.
- the two ceramic molded parts cannot be identical, they can only be designed similarly and are by means of a retaining ring are held together.
- a cone connected to the against the with an adapted conical inner surface of the Screw-in bushing can be brought to the sealing system for entry from false air to the actual measuring point under the protective hood prevent.
- It is also useful in the area of the exit of the Plate 8 has a funnel-shaped depression at both ends of the cone intended. By means of these depressions, a gas-tight one can be made Connection by gluing, glazing or with powder filling (ceramic) and reach sealing material.
- the cone with the ceramic molded part can have a Spacer sleeve to be connected.
- the contact element is not stamped, but made by bent spring steel and has a bracket, by means of which the projection 30 in the slot 12 of the Part 11 is supported.
- the ledge 30 On the other side of the ledge 30 is the end of an electrical connection sleeve, so that Contact element 13 secured against moving in total Slot 12 is supported.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Oxygen Concentration In Cells (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Description
- Figur 1
- eine erste Ausführungsform des Gehäuses mit eingesetzten Kontaktelementen und das Sensorelement tragendem Plättchen, im schematischen Halbschnitt,
- Figur 2
- ein Teilstück des Keramikformteils gemäß Fig. 1, in schematischer Draufsicht; und
- Figur 3
- ein Kontaktelement gemäß Fig. 1, im teilweise abgebrochenen Zustand.
Claims (17)
- Gehäuse (5) für Gassensoren, vorzugsweise Lambda-Sonde zur Ermittlung des Schadstoff- und/oder Sauerstoffanteils im Abgas von vorzugsweise Verbrennungsmotoren, mit einem äusseren Schutzgehäuse (6), an dessen einem Ende (15) elektrische Anschlüsse (7) für die auf einem Plättchen (8) angebrachten Sensorelemente und an dessen anderem Ende (14) die Sensorelemente unter einer dem zu messenden Gasstrom auszusetzenden, perforierten Schutzhaube (9) angeordnet sind, und mit einem in dem Schutzgehäuse (6) angeordneten Keramikformteil (10), in welchem Kontaktelemente vorgesehen sind, die die Anschlüsse (7) mit den Kontaktflächen für das Plättchen (8) elektrisch leitend verbinden,
dadurch gekennzeichnet,dass das Keramikformteil (10) parallel zur Achse des Gehäuses geteilt ist und somit aus zwei Teilstücken (11) besteht,dass beide Teilstücke (11) an ihrem einen Ende (15) einseitig offene Schlitze (12) und Vertiefungen (16) aufweisen,dass in diese zwei Teilstücke (11) über die offene-vierte-Seite vorspringende, von drei Seiten des Schlitzes (12) unverrückbar gehaltene Kontaktelemente (13) eingesetzt sind,dass die zwei Teilstücke (11) die bis zu ihrem anderen Ende (14) reichende, an die Form des Plättchens (8) angepasste Vertiefung (16) zur Lagerung und Aufnahme des Plättchens aufweisen,dass zumindest die vorspringenden Bereiche der Kontaktelemente (13) der beiden Teilstücke einander gegenüberliegen und im Bereich der Vertiefung (16) angeordnet sind und sowohl das Plättchen (8) klemmend halten als auch das darauf befindliche Sensorelement zugleich elektrisch leitend verbinden,dass die Kontaktelemente (13) auf ihrem den Anschlüssen zugewandten Ende mit den elektrischen Anschlüssen (7) versehbar sind.dass jedes der beiden Teilstücke (11) eine Trennfläche aufweist, die beide im montierten Zustand zwischen sich das Plättchen (8) und die Kontaktelemente (13) aufnehmen.dass das Kontaktelement (13) einen rückwärtigen Anschlussbereich (30) und einen sich daran anschliessenden Kontaktbereich (27) aufweist. - Gehäuse nach Anspruch 1, dadurch gekennzeichnet, dass das Schutzgehäuse (6) als Hülse aus einem temperaturstabilen Werkstoff ausgebildet ist.
- Gehäuse nach Anspruch 2, dadurch gekennzeichnet, dass der temperaturstabile Werkstoff Metall ist.
- Gehäuse nach einem der Ansprüche 1 oder 3, dadurch gekennzeichnet, dass das Keramikformteil (10) aus zwei in ihrem Zusammenfügebereich gleichartigen oder identischen Teilstücken (11) besteht.
- Gehäuse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass jedes Teilstück (11) Führungs- sowie Haltenasen (18) für das Plättchen sowie zur Halterung der Teilstücke (11) zueinander aufweist.
- Gehäuse nach Anspruch 5, dadurch gekennzeichnet, dass die Führungsnasen (18) des einen Teilstücks (11) in entsprechende Führungslöcher (19) des anderen Teilstücks - im montierten Zustand - eingreifen.
- Gehäuse nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die beiden Teilstücke (11) mittels eines Halterings (43) gehalten werden.
- Gehäuse nach Anspruch 7, dadurch gekennzeichnet, dass der Haltering als Federring, geschlitzte Hülse oder aufgeschrumpfte Hülse ausgebildet ist.
- Gehäuse nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Gehäuse eine mit einem Gewinde (20) versehene Eindrehbuchse (21) für den Gassensor aufweist und zur Aufnahme der Schutzhaube (8) dient.
- Gehäuse nach Anspruch 9, dadurch gekennzeichnet, dass das Schutzgehäuse (6) an der Eindrehbuchse (21) festgelegt ist.
- Gehäuse nach Anspruch 1, dadurch gekennzeichnet, dass der Kontaktbereich (27) ein über die offene - vierte - Seite der Schlitze (12) vorspringenden, eigentlichen Vorsprung (27) aufweist und in diesem Bereich der Kontaktbereich federnd nachgiebig ausgebildet ist.
- Gehäuse nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass der Kontaktbereich (27) nachgiebig federnd ausgebildet ist.
- Gehäuse nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass der Schlitz (12) zumindest einen Vorsprung (30) des Teilstücks (11) auf seinem Grund zum unverrückbaren Haltern des Kontaktelements (13) mit entweder einer an diesem vorgesehenen Ausstanzung (29) oder einem Bügel aufweist.
- Gehäuse nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass das Teilstück (11) an seinem anderen Ende einen damit einstückig verbundenen oder gesonderten und damit verbindbaren Konus aufweist, der gegen die mit einer daran angepassten konischen Innenfläche der Eindrehbuchse (21) dichtend zur Anlage bringbar ist.
- Gehäuse nach Anspruch 14, dadurch gekennzeichnet, dass der Konus an seinen beiden Enden im Bereich des Austritts des aufzunehmenden Plättchens (8) Vertiefungen aufweist.
- Gehäuse nach Anspruch 15, dadurch gekennzeichnet, dass die Vertiefungen trichterförmig ausgebildet sind.
- Gehäuse nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass die beiden Teilstücke (11) und der Konus mittels des Halterings gehalten sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4204850 | 1992-02-18 | ||
DE4204850A DE4204850A1 (de) | 1992-02-18 | 1992-02-18 | Gehaeuse fuer einen gassensor |
PCT/EP1993/000376 WO1993016379A1 (de) | 1992-02-18 | 1993-02-16 | Gehäuse fur gassensoren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0630474A1 EP0630474A1 (de) | 1994-12-28 |
EP0630474B1 true EP0630474B1 (de) | 1998-04-01 |
Family
ID=6451974
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93905251A Expired - Lifetime EP0630474B1 (de) | 1992-02-18 | 1993-02-16 | Gehäuse fur gassensoren |
Country Status (7)
Country | Link |
---|---|
US (1) | US5546787A (de) |
EP (1) | EP0630474B1 (de) |
JP (1) | JP3044328B2 (de) |
AT (1) | ATE164675T1 (de) |
CZ (1) | CZ35694A3 (de) |
DE (2) | DE4204850A1 (de) |
WO (1) | WO1993016379A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022128494A1 (de) * | 2020-12-15 | 2022-06-23 | Robert Bosch Gmbh | VORRICHTUNG ZUM ANSCHLIEßEN EINES SENSORELEMENTS EINES ABGASSENSORS UND ABGASSENSOR |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0797558B1 (de) * | 1994-01-05 | 2001-11-14 | Heraeus Electro-Nite International N.V. | Elektrisch leitende verbindung |
DE4415938C2 (de) * | 1994-05-05 | 2000-02-24 | Heraeus Electro Nite Int | Gassensor |
JPH09147631A (ja) * | 1995-09-20 | 1997-06-06 | Denso Corp | 検出器用のリード線 |
DE19549287A1 (de) * | 1995-12-22 | 1997-06-26 | Siemens Ag | Elektrischer Anschluß für einen Sensor im Hochtemperaturbereich |
DE19549283A1 (de) * | 1995-12-22 | 1997-06-26 | Siemens Ag | Im Hochtemperaturbereich verwendbarer Sensor |
DE19608543A1 (de) * | 1996-03-06 | 1997-09-11 | Bosch Gmbh Robert | Meßfühler |
JP3625627B2 (ja) * | 1996-10-14 | 2005-03-02 | 日本特殊陶業株式会社 | 高温下で使用されるセラミック応用電子機器及びその製造方法 |
US5900541A (en) * | 1997-07-14 | 1999-05-04 | Cummins Engine Company, Inc. | Sensor assembly for easy removal |
DE19735559A1 (de) * | 1997-08-16 | 1999-02-18 | Bosch Gmbh Robert | Gasmeßfühler |
DE19740363A1 (de) | 1997-09-13 | 1999-03-18 | Bosch Gmbh Robert | Gassensor |
JP2001343356A (ja) * | 2000-03-30 | 2001-12-14 | Denso Corp | ガスセンサ |
JP4479115B2 (ja) * | 2000-05-22 | 2010-06-09 | 株式会社デンソー | ガスセンサ |
GB2374419B (en) * | 2001-03-09 | 2004-12-29 | Zellweger Analytics Ltd | Electrochemical gas sensor |
DE10115704C1 (de) * | 2001-03-29 | 2002-09-05 | Epiq Sensor Nite N V | Gehäuse für einen Temperatur- oder Gassensor sowie dessen Verwendung |
US6579030B2 (en) | 2001-05-15 | 2003-06-17 | Arvinmeritor, Inc. | Sensor mount assembly |
US20040040370A1 (en) * | 2002-08-30 | 2004-03-04 | Takashi Kojima | Gas sensor having improved structure of electric connector |
JP2004264262A (ja) * | 2003-03-04 | 2004-09-24 | Denso Corp | セラミック素子と摺動端子との摺動接触構造 |
US6843105B1 (en) * | 2003-06-30 | 2005-01-18 | Robert Bosch Corporation | Contact pin for exhaust gas sensor |
WO2005029058A1 (ja) * | 2003-09-17 | 2005-03-31 | Ngk Spark Plug Co., Ltd. | センサおよびセンサの製造方法 |
EP1544609A1 (de) * | 2003-12-15 | 2005-06-22 | Hitachi, Ltd. | Sauerstoffsensor |
US7404883B2 (en) * | 2004-04-12 | 2008-07-29 | Robert Bosch Gmbh | Insulation bushing assembly for an exhaust gas sensor |
DE102004063168A1 (de) * | 2004-12-29 | 2006-07-13 | Robert Bosch Gmbh | Gasmessfühler |
DE102006053486A1 (de) * | 2006-11-14 | 2008-05-15 | Robert Bosch Gmbh | Gassensor |
DE102012214240A1 (de) * | 2012-08-10 | 2014-02-13 | Robert Bosch Gmbh | Transport- und Lagerungsschutz für einen Messfühler zur Bestimmung mindestens einer Eigenschaft eines Messgases in einem Messgasraum |
DE102013222594A1 (de) * | 2013-03-12 | 2014-09-18 | Robert Bosch Gmbh | Spezielle Dichtungsgeometrie bei Abgassensoren zur Erzeugung einer hohen Dichtigkeit |
KR101598046B1 (ko) * | 2014-05-02 | 2016-03-08 | 조익훈 | 센서 모듈 및 센서 모듈의 제조 방법 |
JP6635891B2 (ja) * | 2016-07-19 | 2020-01-29 | 日本特殊陶業株式会社 | ガスセンサ |
DE102018129497B4 (de) * | 2018-11-22 | 2022-01-13 | Balluff Gmbh | Sensorgehäuse und Sensor |
FR3089626B1 (fr) * | 2018-12-10 | 2020-12-25 | Arianegroup Sas | Crépine de protection pour capteur |
RU192938U1 (ru) * | 2019-06-28 | 2019-10-08 | федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский ядерный университет МИФИ" (НИЯУ МИФИ) | Газовый сенсор |
RU199011U1 (ru) * | 2019-11-21 | 2020-08-07 | федеральное государственное бюджетное автономное образовательное учреждение высшего образования "Национальный исследовательский ядерный университет МИФИ" | Газовый сенсор |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3206903A1 (de) * | 1982-02-26 | 1983-09-15 | Bosch Gmbh Robert | Gassensor, insbesondere fuer abgase von brennkraftmaschinen |
DE3410122A1 (de) * | 1984-03-20 | 1985-10-03 | Robert Bosch Gmbh, 7000 Stuttgart | Sauerstoffsensor |
DE3423590A1 (de) * | 1984-06-27 | 1986-01-09 | Robert Bosch Gmbh, 7000 Stuttgart | Sauerstoffmessfuehler |
US4784743A (en) * | 1984-12-06 | 1988-11-15 | Ngk Insulators, Ltd. | Oxygen sensor |
DE3922331C2 (de) * | 1989-07-07 | 1998-12-03 | Bosch Gmbh Robert | Gasmeßfühler |
JPH0754852Y2 (ja) * | 1990-10-03 | 1995-12-18 | 日本碍子株式会社 | 酸素センサ |
DE59107034D1 (de) * | 1990-10-26 | 1996-01-18 | Bosch Gmbh Robert | Gasmessfühler, insbesondere zur bestimmung des sauerstoffgehaltes in abgasen von brennkraftmaschinen. |
US5098548A (en) * | 1991-01-14 | 1992-03-24 | General Motors Corporation | Heated solid electrolyte oxygen sensor |
-
1992
- 1992-02-18 DE DE4204850A patent/DE4204850A1/de not_active Withdrawn
-
1993
- 1993-02-16 DE DE59308355T patent/DE59308355D1/de not_active Expired - Fee Related
- 1993-02-16 AT AT93905251T patent/ATE164675T1/de not_active IP Right Cessation
- 1993-02-16 WO PCT/EP1993/000376 patent/WO1993016379A1/de active IP Right Grant
- 1993-02-16 EP EP93905251A patent/EP0630474B1/de not_active Expired - Lifetime
- 1993-02-16 JP JP5513798A patent/JP3044328B2/ja not_active Expired - Lifetime
- 1993-02-16 US US08/234,991 patent/US5546787A/en not_active Expired - Fee Related
-
1994
- 1994-02-18 CZ CZ94356A patent/CZ35694A3/cs unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022128494A1 (de) * | 2020-12-15 | 2022-06-23 | Robert Bosch Gmbh | VORRICHTUNG ZUM ANSCHLIEßEN EINES SENSORELEMENTS EINES ABGASSENSORS UND ABGASSENSOR |
Also Published As
Publication number | Publication date |
---|---|
JP3044328B2 (ja) | 2000-05-22 |
DE59308355D1 (de) | 1998-05-07 |
ATE164675T1 (de) | 1998-04-15 |
JPH07503790A (ja) | 1995-04-20 |
WO1993016379A1 (de) | 1993-08-19 |
EP0630474A1 (de) | 1994-12-28 |
CZ35694A3 (en) | 1994-07-13 |
DE4204850A1 (de) | 1993-08-19 |
US5546787A (en) | 1996-08-20 |
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